How should I be using my triclosan deodorizing shampoo?

Triclosan. Use as per the manufacturers recommendations; unless otherwise instructed by your physician. At times, a physician's personal experience with a medication or product influences their instructions for how it should be used to obtain maximal benefit or least side-effects. This is called an "off-label" use recommendation.
Triclosan. Tis is hard core soap/shampoo. If you are using it simply because of germs, then this is a bit excessive. Typically triclosan is used on dog shampoos. If you still plan to use it, then follow the instructions on the bottle. If they are written in a different language, be safe and toss the product.